You don't pay attention to the whole thing. Later on, during a chat with one of your courtiers, you hear that the battlemaster slain 3 bravados before leaving the capital for the southern lands.
Few days later a reply from your senior, King Tinwulf II, arrives; along with 300 swift and well-equipped light horsemen: Tinwulf writes that you're allowed to post guards at the border, along with his cavalry, and hunt down any Eist intruders who break the law. No outside counter-raids though.
You send the orders and the borrowed horsemen eastwards to the border.
961 AD, Summer
Not that long afterwards, you receive a report; 39 Eist people were captured and 11 killed in total for harassing refugees, trespassing the Duchy's borders and beating up your newest citizens.
961 AD, Midsummer
A delegation of tall, pale-skinned, black-haired men dressed in blues and oranges arrive at your court. They were golden neck-collars and have intricately detailed leafy clasps on their cloaks - yet they're definitely not elves.
"Greetings! We are the merchants of the Calvendocia. We have heard many tales from our dwarven partners that these lands in the east, past the savage horselands and the hostile Kiwi lands, are rich in mineral resources. Therefore our Council have sent us here to seek out potential trading partners."
"What exactly are you seeking?" The leader, wearing a diadem of sorts, steps forward.
"Our land has plenty of foodstuffs and good timber, extravagant spices and polished stone, plant and worm fibers, but little in terms of noble metals - copper, brass, bronze, silver and gold. We therefore mainly offer to buy these resources in exchange for the things you might not have, and we happen to know that your land is lacking in spice and luxuries." One other steps forward as well.
"The dwarves told us that your have profitable copper mines under your rule, Duke. How about we offer spices, furs, wormcloth and jewellery for your noblemen in exchange for both raw and processed copper?" You ponder the offer for a while...
A) Politely decline the offer as you need copper more than luxuries at the moment.
B) Luxuries will sure placate the grumbling of noblemen and maybe even merchants and other well-doing citizens - and a happy citizen is a loyal citizen.
C) Ask if they can offer or are in need for something else.